Manufacturers of foams used to fight fuel fires have asked to coordinate about 85 lawsuits that allege toxic chemicals in their products have leaked into drinking water, putting residents at risk of getting cancer and other illnesses.

In a motion filed last week, Tyco Fire Products LP and Chemguard Inc. asked the U.S. Judicial Panel on Multidistrict Litigation to send 75 cases to Massachusetts, where a federal judge is overseeing four actions “well into the litigation process.” The cases span seven states: Colorado, Delaware, Florida, Massachusetts, New York, Pennsylvania and Washington. 3M Co. filed a motion two days later to add nine more lawsuits from Alabama, Michigan, Minnesota and upstate New York.